title: Molecular cloning in bacteriophage lambda and in cosmids.
abstract: Bacteriophage lambda contains a double-stranded DNA molecule of about 50 kilobases (kb). This molecule is linear in the phage particle and it possesses a set of single-stranded complementary ends (the cos region) by which the molecule is joined to form a circular molecule in the first step of the infection.
authors.affiliation: Gensplejsningsgruppen, The Technical University of Denmark, Lyngby, Denmark.
authors.forename: C
authors.initials: C
authors.lastname: Christiansen